Arizona Cutting Horse Tests Positive for EHV-1

The horse had previously been at the South Point Equestrian Center in Las Vegas, as well as an Arizona Cutting Horse Association show in Queen Creek.

From the Equine Disease Communication Center

(Credit: Kellie Carter)

On March 2, 2018, the Arizona State Veterinarian received notification confirming the diagnosis of equine herpes myeloencephalopathy (EHM) in a 9-year-old Quarter Horse gelding that had tested positive for EHV-1 "wild type" on nasal swab while under treatment at a referral hospital.  

The horse had been at South Point Equestrian Center in Las Vegas in early February for a cutting horse event and also attended the Arizona Cutting Horse Association show in Queen Creek the weekend prior to developing neurological signs.

The horse's training facility is under quarantine.  

As a precaution, the State Veterinarian of Nevada is reaching out to 18 states that had participants at the event not including Nevada and Arizona.The Arizona Cutting Horse Association is also reaching out to all contestants to inform them that all horses that attended the events and horses in barns should be observed for signs of illness and contact their veterinarian for testing as they may have been exposed.  

The event center at Queen Creek is in the process of doing a second disinfection of the facility.  

The Pacific Coast Cutting Horse Association Winter Roundup in Paso Robles, California, has been postponed as a precaution.

See more updates from the Equine Disease Communication Center.